Pinus – pine (Latin)

Leaves:

• evergreen
• needles
  • spirally arranged
  • fascicles (bundled at base with a papery sheath)
  • 2, 3, or 5 per fascicle, depending on species

Cones:

• monoecious
• woody scales spirally arranged
• scales w/ keel (blunt or rounded protuberance)

Other notes:

• trees, some shrubs
• whorled, spreading branches
• bark furrowed or scaly
• 2 subgenera:
  • soft pines (white)
    • needles in 5
    • cones unarmed
    • resinous
  • hard pines (black or red)
    • needles in 2 or 3
    • cones armed

Species:

• Pinus contorta (shore pine)
• Pinus nigra (black pine)
• Pinus ponderosa (Ponderosa pine)